"I have a baby in my tummy – but a real one, not just for my TV show," The "Accidentally on Purpose" star revealed. "My character's pregnant the whole first season, so I said, 'It's a good time to have another baby, because we won't have to hide it.'"

Jenna and husband Bodhi Elfman already have a son, Story Elias, 2. The couple wed in 1995.